Note C - Marketable Equity Securities - Recognized Gains (Losses) in Market Value for Securities (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
	Sep. 30, 2015	Sep. 30, 2015	Jun. 30, 2015	Dec. 31, 2014
Recognized gain	$ 59	$ 59	$ 83	$ 146
Net recognized loss	(24)	(87)
Net recognized loss, net of taxes	$ (15)	$ (54)